Premium
Volatiles released during the weathering of PVC
Author(s) -
Carlsson D. J.,
Krzymien M.,
Worsfold D. J.,
Day M.
Publication year - 1997
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.10174
Subject(s) - vinyl chloride , thermal desorption , weathering , desorption , adsorption , hydrogen chloride , environmental chemistry , polyvinyl chloride , chemistry , materials science , chemical engineering , organic chemistry , geology , geomorphology , copolymer , polymer , engineering
Volatile organic compounds and organochlorine species liberated by UV exposure of poly(vinyl chloride) (PVC) siding samples have been identified and preliminary quantification made. These volatiles included those remaining in a PVC sample after weathering or laboratory UV exposure and which could be released by thermal desorption. In addition, by using a flow‐through cell and granular carbon adsorbents, volatile species directly desorbed during laboratory UV exposure were measured. Total directly desorbed organochlorine compounds were about 1/20 of the weight of hydrogen chloride as measured by conductometric analysis, Quite similar products were observed from old (∼1984) and current (1995) commercial siding formulations. Observed volatile compounds are proposed to come from the TiO 2 ‐controlled photo‐oxidation of both PVC and its additives such as impact modifiers.